Win7 Upgrade paths

From this download link: http://www.microsoft.com/downloads/d...displaylang=en


Unsupported Upgrade Scenarios


· Upgrades to Windows 7 from the following operating systems are not supported:
· Windows 95, Windows 98, Windows Millennium Edition, Windows XP, Windows Vista® RTM, Windows Vista Starter, Windows 7 M3, Windows 7 Beta, Windows 7 RC, or Windows 7 IDS
· Windows NT® Server 4.0, Windows 2000 Server, Windows Server® 2003, Windows Server 2008, or Windows Server 2008 R2
· Cross-architecture in-place upgrades (for example, x86 to x64) are not supported.
· Cross-language in-place upgrades (for example, en-us to de-de) are not supported.
· Cross-SKU upgrades (for example, Windows 7 N to Windows 7 K) are not supported.
· Upgrades from Windows Vista to Windows N, Windows K, Windows KN, or Windows E are not supported.
· Cross-build type in-place upgrades (for example, fre to chk) are not supported.
· Pre-release in-place upgrades across milestones (for example, Windows 7 RC to Windows 7 RTM) are not supported.

Supported Upgrade Scenarios



From Windows Vista (SP1, SP2)
Upgrade to Windows 7
Business
Professional, Enterprise, Ultimate
Enterprise
Enterprise
Home Basic
Home Basic, Home Premium, Ultimate
Home Premium
Home Premium, Ultimate
Ultimate
Ultimate


From Windows 7
Upgrade to Windows 7
Enterprise
Enterprise
Home Basic
Home Basic
Home Premium
Home Premium
Professional
Professional
Starter (x86 only)
Starter (x86)
Ultimate
Ultimate


From Windows 7
Anytime Upgrade to Windows 7
Home Basic
Home Premium, Professional, Ultimate
Home Premium
Professional, Ultimate
Professional
Ultimate
Starter
Home Premium, Professional, Ultimate